Acer 5715Z 1.8V is dead

[tomodachi]

System switches on 1.8V rail shows 0.50V and no +CPU_CORE voltage at PL7 &PL8
Replaced PU8 +1.5VSP/+1.8VP generator but no change. There is no short at 1.8V rail and to the ground it shows 140ohms.
Pls and ideas ?

[dj_ricoh]

Re: Acer 5715Z 1.8V is dead

try i soft reflow on the chipset

[tomodachi]

Re: Acer 5715Z 1.8V is dead

try i soft reflow on the chipset

Did a proper reflow, didn't work :/

[Francisco.s]

Re: Acer 5715Z 1.8V is dead

System switches on 1.8V rail shows 0.50V and no +CPU_CORE voltage at PL7 &PL8
Replaced PU8 +1.5VSP/+1.8VP generator but no change. There is no short at 1.8V rail and to the ground it shows 140ohms.
Pls and ideas ?

Check value of PR127.
Also check VR_ON signal.

[tomodachi]

Re: Acer 5715Z 1.8V is dead

Check value of PR127.
Also check VR_ON signal.

I m home at the moment. I 'll check tomorrow and post here, many thanks btw